Yes, you will need to file a Form 1310 again if your mother's 2023 tax return shows a refund.
The IRS keeps an image of the support documents with the tax return that was filed for last year, but each year is processed separately, so you may need to submit a copy of the death certificate as well. This doesn't have to be a certified copy, just a scan or duplicate of a certified copy.
TurboTax will tell you exactly what to send based on the information in the tax return.
I am very sorry for your loss. If you have more questions, please feel free to reach out again.
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